Improvement in indicator-padlocks



H. W. DOPP, Improvement in Indicator Pad Locks. N0.123,558.

Patented Feb. 13, i872.

H. WILLIAM DOPP, OF BUFFALO, NEW YORK.

IMPROVEMENT IN lNDlCATQR-PADLOCKSJ Specification forming part of LettersPatent No. 123,558, dated February 13, 1872.

Specification describing; certain Improvements in Padlocks, invented byH. WILLIAM DOPP, of the city of Buffalo, in the State of New York.

First, the first part of my invention consists in the manufacture of apadlock, in which is an indicator, composed of a series of rings orwheels, each of which is provided with ten figures on its periphery andthey are placed in a row, so that a numbermay be produced in the mannersubstantially as shown in the drawing. Second, in the arrangement of aslide on the face side of the lock, said slide being locked and unlockedby a series of tumblers beneath it, and engaging with the lock-bolt.Third, the casing for the padlock, as shown, consisting of a box, ahinged door or cover, and a blade-sprin g, arranged and operated asshown.

I refer to the annexed drawing, which eX- plains my invention morefully, and in which like letters of reference indicate like parts.

Figure 1 represents a face view of my padlock when unlocked. Fig. 2represents an interior view, part in section. Fig. 3 is a view of theunder side of the face-plate. Fig. 4 is a vertical section. V Fig. 5 isan end and side view of the register rocking shaft; said rocking shaftis provided with a slot which runs nearly through its entire length.Fig. 6 is a plan of the key. The fingers of said key are on their endalternately of wedge-shape, or so that when the key is inserted into thelock they enter beneath and wedge up their respective tumblers. Theother fingers are square on their ends. Fig. 7 is a section of a metalcasing, intended to inclose the padlock so as to protect it againstsnow, ice, 85c. Fig.8 is a front view of the same with portions of thecover removed. The cover or door B is hinged to the box part of casin g,and is kept shut or open by a blade-spring, S, acting upon said hingedcover, as plainly illustrated in Fig. 7.

A is a slide plate, provided with an opening, A of such size as toexpose one figure of each of the register-wheels or rings H. It 7 isalso provided with a pin or stud, B, which connects with the lock-bolt Gby means of camgroove 0 and two grooves, A A sunk in its under side forthe tumblers I to engage in. It is further provided on its under sidewith two pins, A by means of which motion is given to the rock-shaft F.SlideA is secured to the face-plate E by means of a dovetail, in whichit slides up and down. The pin or stud B, and the pins A reach throughslot-holes E and E in face-plate E, so as to connect with lock-bolt Cand rocking shaft F. E is the face-plate or cover of the look. It isprovided with a series of tumblers, I, on its under side, which tumblersreach through two correspondin g slot-holes of face-plate rFig. 4) intothe two grooves A thus locking A to E. The faceplate E isalso providedwith an opening, so as to expose a figure of each of the registerwheelsor rings H; also, with a coiled spring, K, secured to a projecting studon its under side, which spring acts on the stud B to force theslide-plate A downward as soon as it is released from the tumblers I.

It will be observed that, as the slide-plate is connected to lock-bolt Gby means of the stud B and cam-groove G the lock-bolt G will movebackward or forward whenever the plate A is moved downward or upward.When A is forced down by means of the coiled spring K, lock-bolt Gwithdraws out of the hook of the shackle, and the lock is unlocked; butwhen the slide-plate A is moved upward, the lock-bolt C will moveforward, and if the shackle-hook has been inserted in the lock, bolt 0will move into hook L; and the tumblers I, as soon as slide A isentirely moved up, will enter the grooves A of slide A and remain inthis locked position until the slide is released from the tumblers I bymeans of a key inserted in the key-hole I. F is the register rockingshaft, which has its bearings in the register-casing M. A series ofrings, H, surround said rocking shaft, as seen in Figs. 2 and. F isprovided with a slothole for the reception of a sliding bar, N, and witha round hole, N,

through its end for the reception of a pin, P,

by means of which motion is transmitted from the slide A to the shaft F.Said pin P matches in between two similar pins, A secured to slide A, sothat if A is moved downward and upward, they will rock the shaft F. H isa series of 'wheels or rings, each provided with ten square notchesinside, one of which is much deeper than the rest 5 and with tenratchet-notches on their periphery. Between each of these notches isstamped a figure, from 1 to 0, consecutively. Said wheels or rings H areplaced into their casing M, in which they revolve. For every rockingmotion of shaft F the unit'wheel at right hand will revolve the distancefrom one notch to another; the tenswheel revolves the distance of onenotch for every entire revolution of the unit-wheels; the hundreds-wheel moves the distance of one notch for every one entire revolutionof the tens-wheel, and so on. M is the casing of the decimal register.An opening is cut through at E in Fig. 4, so as to expose one figure ofeach of the wheels or rings H. An opening is also cut through nearlyopposite of E so as to expose one notch of each of the rings H. A seriesof small spring-pawls, one for each ring, en gages with the notches ontheir periphery, as is plainly shown in Fig. 4. Said springs and notchesserve to keep the wheels H in place. N is a sliding bar placed in therocking shaft F, in which it slides up and down. It is kept within F bymeans of a cover, se-

1 cured in dovetailed grooves of F, as seen in Fig. 5. A small coiledspring is secured at one end to said cover, and the other end to slidingbar N, as illustrated in Fig. 2. Said coiled spring serves to make thebar N engage with the square notches inside of wheels H, so thatwhenever the shaft F and bar N are set in motion, the wheel or wheelsengaged with the bar N will also move.

It will be observed, first, that the shaft F receives its motion fromslide plate A; second, that slide A is set in motion whenever the lockis to be locked or unlocked third, that the shaft F, by means of bar N,engages with one or more of the wheels or rings H by means of the insidesquare notches; it is therefore that the register will count one forevery time the lock islockcd; and be it further observed, that the key,as represented in Fig. 6, is provided on its left side with a longerlinger, long enough to reach projection N of the bar N, thus disengagingN from H, so that N may engage with the next square notch in one of therings II. The bar N is disengaged from H by means of the key, but itengages again with H at the moment the key is withdrawn and the lockbecomes unlocked. So it will be seen that the register remainsundisturbed during the process of unlocking; but revolves the distanceof one number every time the lock is closed, although the respectivenumber will not appear until it is unlocked again, because the slide Amust be in the position shown in Fig. 1, in order to show the register;and be it further observed, that the rings H are each pro vided, ontheir inside, with nine shallow square notches and one deep squarenotch. Now, suppose that the whole series of wheels H are placed so asto bring the deep notches all in one line when the register shows butnaughts;

the consequence will be that, on account of the engages with the shackleof the look, as seen in Fig. 2, to throw or force the hook end ofshackle out of the lock whenever the lock-bolt O disengages from hook L.

In order to lock the lock, press the shackle down into the lock, and theslide A up. In order to unlock, insert the key with its long finger tothe left into the key-hole I until it comes to a stop. This diseu gagesthe tumblers from A, when the springs K and 0 will open the lock.

Having thus fully described my invention, what I desire to secure byLetters Patent, is-

Claims.

1. I claim, in a padlock, an indicator composed of a series of rings orwheels H, provided each with ten fingers on their periphery, and placedin a row, so that a number maybe produced in the manner substantially asshown and described.

2. I claim, in a padlock, the combination of the register-casing M,decimal-wheels H, sliding bar N, and shaft F, as and for the purpose setforth.

3. I claim the arrangement of a slide A on the face outside of a padlockengaged with the lock-bolt (J, coiled spring K, and a series of tumblersbeneath it, for the use and purpose set forth.

4. I claim, the combination of slide A and coiled spring K, or itsequivalent, with a decimal-register, when operated as specified.

5. I claim a decimal-indicator, in combination with the sliding bar N,and a key or equivalent, as set forth.

6. I claim a casing for padlocks, consisting of a box, a hinged door orcover, and a bladespring, arranged and operated substantially as shownand described.

H. WILLIAM DOPP.

Witnesses:

MrcHAEL J. STARK, J os. W. l\'IADDEN.

